Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345

$45.00
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Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345
Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345
Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345
Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345
Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345

Unicel® C-5345 – 45 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-5345

$45.00
Description
The Unicel® C-5345 filter cartridge is a 45 square foot replacement for many Rainbow and Waterway spa systems. Constructed with durable Reemay® spunbond polyester media, it provides excellent filtration performance and long-lasting durability. Its open top and bottom design with 2-1/8" inner diameter makes it compatible with a wide range of filter housings. Replace regularly to keep your spa water sparkling clean and your equipment running smoothly.

Product Description

  • 45 sq ft spa filter cartridge designed for Rainbow, Waterway, and compatible spa systems requiring open-ended filters.

  • Made from Reemay® polyester media to provide superior filtration of fine particles, body oils, and other debris.

  • Open top and bottom with 2-1/8" inner diameter for easy installation and compatibility with standard spa filter housings.

  • Measures 10-1/8" in length and 5-5/16" in outer diameter—perfect for many compact spa systems.

  • Helps maintain clean, clear water and reduces strain on pumps, heaters, and plumbing.

  • Reusable with regular rinsing and monthly deep cleaning using spa filter cleaner.

  • Should be replaced every 12 months or as needed based on spa usage and water quality.

  • Manufactured by Unicel®, a trusted industry leader in pool and spa filtration.

Product Specification

Brand Unicel
SKU C-5345
Dimensions 5.5 x 10.2 x 5.3 in
Barcode 729360163933
Weight 1.4 lb

Product Compatibility

  • 2021 - 2024 Nordic Hot Tubs™ Crown II
  • 2021 - 2024 Nordic Hot Tubs™ Crown XL
  • 2021 - 2024 Nordic Hot Tubs™ Escape MS
  • 2021 - 2024 Nordic Hot Tubs™ Escape SE
  • 2021 - 2024 Nordic Hot Tubs™ Escape LS
  • 2021 - 2024 Nordic Hot Tubs™ Impulse DP
  • 2021 - 2024 Nordic Hot Tubs™ Rendezvous LS
  • 2021 - 2024 Nordic Hot Tubs™ Sport
  • 2021 - 2024 Nordic Hot Tubs™ Warrior XL

Filter Dimensions

Diameter 5.375"
Length 10.125"
Hole Size 2125"
Sq. Ft 50
Replacement(s) PLBS50 FC-2970 R173584 X268519 10419 14513 50451 817-0014

FAQ

Q: What spa brands does this filter fit?

A: It fits Rainbow, Waterway, and compatible systems using a 45 sq ft, open-ended cartridge—verify dimensions to confirm fit.

Q: Is this filter reusable?

A: Yes, rinse weekly and use a filter cleaner monthly to prolong its lifespan.

Q: How often should it be replaced?

A: Typically once a year, or sooner in high-use spas or poor water conditions.

Q: Is this the same as the Pleatco PRB45-IN?

A: Yes, it is an equivalent replacement made with Reemay® filter media.

Q: Can I use this in saltwater spas?

A: Yes, it's compatible with chlorine, bromine, saltwater, and mineral systems.

Directions

Turn off the spa and access the filter compartment.

Remove the old cartridge and dispose of it properly.

Rinse the new C-5345 thoroughly before installation.

Insert the filter into the housing, aligning both open ends.

Turn the spa back on and check for proper filtration flow.

Customer Reviews

Based on 147 reviews
46%
(67)
54%
(80)
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L
Leslie W.
Highly recommend

I had no trouble replacing the old part. Great product and even better support.

S
Skylar K.
Five stars

High quality and simple to install. This is the kind of reliability I expect.

L
Leslie W.
Great quality!

I had no trouble replacing the old part. Great product and even better support.

S
Sydney T.
Perfect fit

High quality and simple to install. This is the kind of reliability I expect.

C
Chris N.
Good value

Very happy with this purchase. The materials feel solid and it fits perfectly.

123

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